期刊
PFLUGERS ARCHIV-EUROPEAN JOURNAL OF PHYSIOLOGY
卷 467, 期 3, 页码 605-614出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s00424-014-1684-y
关键词
Blood pressure; Chloride channel; Hypertension; Kidney; Vascular resistance; Vasoconstriction
类别
资金
- DFG
- Else Kroner Fresenius-Stiftung
- Thyssen Stiftung
- DZHK
Recent studies suggest that primary changes in vascular resistance can cause sustained changes in arterial blood pressure. In this review, we summarize current knowledge about Cl- homeostasis in vascular smooth muscle cells. Within vascular smooth muscle cells, Cl- is accumulated above the electrochemical equilibrium, causing Cl- efflux, membrane depolarization, and increased contractile force when Cl- channels are opened. At least two different transport mechanisms contribute to raise [Cl-] (i) in vascular smooth muscle cells, anion exchange, and cation-chloride cotransport. Recent work suggests that TMEM16A-associated Ca2+-activated Cl- currents mediate Cl- efflux in vascular smooth muscle cells leading to vasoconstriction. Additional proteins associated with Cl- flux in vascular smooth muscle are bestrophins, which modulate vasomotion, the volume-activated LRRC8, and the cystic fibrosis transmembrane conductance regulator (CFTR). Cl- transporters and Cl- channels in vascular smooth muscle cells (VSMCs) significantly contribute to the physiological regulation of vascular tone and arterial blood pressure.
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